Roll end capper

Claim 2

A roll end capper for folding over a roll end corner the portion of the width of a strip encircling an end portion of the roll circumference which overhangs such roll ends, comprising means for rotating the paper roll about an axis extending lengthwise of such roll in applying the strip around an end portion of the roller circumference with a portion of the width of such strip overhanging the roll end, and tucking means including a ball swung orbitally about an axis at a distance from the center of the ball much greater than the radius of the ball and extending transversely of the axis about which the paper roll is rotated to flick periodically only circumferentially spaced locations of an edge portion of the roll-encircling strip overhanging the roll end for deflecting such overhanging strip portion inward toward the adjacent roll end.

Claim 3

The capper defined in claim 1, in which the tucking means includes a plurality of balls whirled about an axis extending generally chordwise of the roll and spaced from the adjacent roll end.

Claim 4

The capper defined in claim 7, in which the ball-whirling means moves each ball toward the center of the roll as the ball approaches the roll end.

Claim 5

A roll end capper for securing a cap disk in position applied to the end of a paper roll by a cap-retaining strip encircling an end portion of the roll circumference and having a portion of its width folded over the roll end corner and the margin of the cap disk, comprising means for rotating the paper roll in applying the cap-retaining strip around an end portion of the roll circumference with a portion of the width of such strip overhanging the roll end, tucking means for deflecting inward and folding at circumferentially spaced locations the portion of the strip width overhanging the roll end to engage the folded strip portions with the margin of the cap disk applied to the adjacent roll end, and cap-disk-holding means engageable with the cap disk for holding such disk against the roll end prior to the cap-retaining strip engaging the disk margin.

Claim 6

A roll end capper for securing a cap disk in position applied to the end of a paper roll by a cap-retaining strip encircling an end portion of the roll circumference and having a portion of its width folded over the roll end corner and the margin of the cap disk, comprising means for rotating the paper roll in applying the cap-retaining strip around an end portion of the roll circumference with a portion of the width of such strip overhanging the roll end, tucking means for deflecting inward and folding at circumferentially spaced locations the portion of the strip width overhanging the roll end to engage the folded strip portions with the margin of the cap disk applied to the adjacent roll end, and cap-disk-holding means engageable with the cap disk for holding such disk against the roll end prior to the cap-retaining strip engaging the disk margin.

Claim 7

The capper defined in claim 4, in which the cap-disk-holding means includes a plurality of rollers rotating about axes extending radially of the roll and engaging the cap disk.

Claim 8

A roll end capper for folding over a roll end corner the portion of the width of a strip encircling an end portion of the roll circumference which overhangs such roll end, comprising means for rotating the paper roll in applying the strip around an end portion of the paper roll circumference with a portion of the width of such strip overhanging the roll end, tucking means for deflecting inward and folding at circumferentially spaced locations the portion of the strip overhanging the roll end, and presser means including a pressure roller cooperating with said tucking means and pressed against the paper roll end during strip-deflecting operation of said tucking means and engageable with the portions of the strip width folded by said tucking means for creasing the strip folds and means supporting said pressure roller for rotation about an axis somewhat skewed from a radial plane of the paper roll which intersects the axis of said roller.

Claim 9

A roll end capper for folding over a roll end corner the portion of the width of a strip encircling an end portion of the roll circumference which overhangs such roll end, comprising means for rotating the paper roll in applying the strip around an end portion of the paper roll circumference with a portion of the width of such strip overhanging the roll end, tucking means for deflecting inward and folding at circumferentially spaced locations the portion of the strip overhanging the roll end, and presser means including a pressure roller cooperating with said tucking means and pressed against the paper roll end during strip-deflecting operation of said tucking means and engageable with the portions of the strip width folded by said tucking means for creasing the strip folds and means supporting said pressure roller for rotation about an axis somewhat skewed from a radial plane of the paper roll which intersects the axis of said roller.

Claim 10

The capper defined in claim 6, In which the roller-supporting means supports the pressure roller inclined to dispose its end which is closer to the axis of the paper roll in advance in the direction of paper roll rotation of the end of the roller which is farther from the axis of the paper roll, whereby a portion of a strip fold nearer the circumference of the paper roll is pressed by the pressure roller before the portions of the fold farther from the paper roll circumference are pressed by the pressure roller.

Claim 11

A roll end capper for folding over a roll end corner the portion of the width of a strip encircling an end portion of the roll circumference which overhangs such roll end, comprising means for rotating the paper roll in applying the strip around an end portion of the roll circumference with a portion of the width of such strip overhanging the roll end, tucking means for deflecting inward and folding at circumferentially spaced locations the portion of the strip width overhanging the roll end, and nozzle means adjacent to the tucking means for projecting a stream of fluid against the portion of the strip width overhanging the end of the roll prior to engagement of the tucking means therewith to initiate inward deflection of such overhanging portion of the strip width.

Claim 12

A roll end capper for folding over a roll end corner the portion of the width of a strip encircling an end portion of the roll circumference which overhangs such roll end, comprising means for rotating the paper roll in applying the strip around an end portion of the roll circumference with a portion of the width of such strip overhanging the roll end, tucking means for deflecting inward and folding at circumferentially spaced locations the portion of the strip width overhanging the roll end, and nozzle means adjacent to the tucking means for projecting a stream of fluid against the portion of the strip width overhanging the end of the roll prior to engagement of the tucking means therewith to initiate inward deflection of such overhanging portion of the strip width.